Part of me wants to think subby did it on purpose because it involves grammar nazis and the story is about Germany.But subby is probably just the usual result of the public education system in this country.

Actually allowing dancing without a license is illegal for bars and clubs in Tokyo. They recently started enforcing this old rule after the Yakuza beat a guy to death a club last year. Since they can't go after the Yakuza directly, they're hitting back at the clubs they own, I guess. That or it's the Yaks selling the licenses. Either way many places now ban dancing.